particle theory group - indico.physics.lbl.gov · particle theory group zoltan ligeti...
TRANSCRIPT
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Particle Theory GroupZoltan Ligeti
March 16, 2018
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Who we are
Christian Bauer Zoltan Ligeti Michele Papucci Kathryn Zurek
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Who we really are: BCTP
Christian Bauer Zoltan Ligeti Michele Papucci Kathryn Zurek
Lawrence Hall Hitoshi Murayama Yasunori Nomura Surjeet Rajendran
Mina Aganagic Raphael Bousso Ori Ganor Petr Hořava
+ postdocs
+ students
+ visitors
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BCTP postdocs
Bao Dror Fedderke Harigaya
Galakhov Grabowska Knapen Kos
Lou Moult Ramani Remmen
• One of the largest and best groups of postdocs in the country, many work with graduate studentsp.2 p.2
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The particle theory side
Experiments|
QCD, collider physics, Higgs:Bauer, Ligeti, Papucci, Zurek, Murayama
BSM Phenomenology:Ligeti, Papucci, Zurek,Hall, MurayamaNomura, Rajendran
Model building:Papucci, Zurek,Hall, MurayamaNomura, Rajendran
Flavor physics:Bauer, Ligeti, Papucci
Dark matter, cosmic rays:Papucci, Zurek, NomuraHall, Murayama, Rajendran
Neutrinos:Zurek, Murayama
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What and how...
• Those of you who attended the BCTP open house yesterday heard already a lot• We are leaders in many areas of particle theory• Research interests evolve depending on what are the most relevant questions to
address at the moment — “What’s most exciting?”
• Each of us has his/her own way to approach problems — Important for you to beexposed to many different ways of doing physics in a large and diverse group
• Students and postdocs are free to collaborate with anyone (encouraged!)(Most doors open, exciting & lively discussions all the time, yearly retreats at Lake Tahoe)
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Some research interests (random order)
Develop effective field theories, apply to various problems (flavor, jets, DM, cosmology, ...)
Precision SM calculations, Monte Carlo methods / tools
Collider physics: SM measurements and BSM searches
Flavor physics, CP violation, low-energy searches for NP
Electroweak scale BSM model building / Higgs phenomenology
Dark matter model building, new techniqes for DM detection
Dark matter searches (direct detection + indirectly with particle astrophysics)
Proposals for new detectors, new analysis techniques
Early universe particle cosmology
Neutrino physics, leptogenesis models
Inflationary models
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Connections to experiments
• LBNL has the strongest university connection among the national labs(more so than, e.g., SLAC–Stanford)
• In BCTP we operate as a single group (Mon/Tue on campus, Wed/Thu at LBL,seminars split between campus and LBL accordingly)
• Closeness to extensive experimental programs, many interactions(joint seminars & workshops, etc.)
• Particle theory graduate students exposed to broad spectrum of experimentalresearch at LBL, can become important in shaping careers
• Experimental graduate students have easy access to the theory group for adviceon theoretical aspects of their research (just walk down the corridor or catchsomeone at the espresso machine...)
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Theory – experiment connections
• Logistics at LBL makes it extremely easy for theorists and experimentalists tointeract on a daily basis
• Regular ATLAS–Theory lunches (informal talks→ discussions, collaborations)• Many of us provide theoretical advice to experiments:
ATLAS, DM detection, neutrinos, flavor physics, PDG
Even propose new experiments / techniques
• In the past some of these resulted in direct involve-ment in experiments (Cahn, Hinchliffe, Murayama)
Hitoshi taking shifts in KamLAND −→
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My personal views
• After Higgs discovery, situation may resemble around 1900 — we don’t under-stand a “few” things (a lot left for you!) ⇒ may see revolutions, but no guarantees(Michelson 1894: “... it seems probable that most of the grand underlying principles have been firmly established ...”)
Dark energy — cosmological constant?Dark matter — vast parameter space; only interact gravitationally?Baryon asymmetry — originates at very high scales?Neutrino mass — Majorana or Dirac? (lepton number viol.?)Strong CP problem — axion?Flavor parameters and hierarchies — very high scales?
Leave no stone unturned — explore fully what technologies allow
• Move the lamp post: e.g., new LHC searches, new DM or axion param’ space• Search better under the lamp post: e.g., Higgs couplings, B decays & CP violation• Historically, the combination of both approaches proved most fruitful
Most of us work on both type of questions
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And an apology...
• In past years we always had a breakout with theory postdocs, parallel to lab tours
• See http://www-theory.lbl.gov/ and http://ctp.berkeley.edu/All of us (present or not) would be happy to talk to you!
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http://www-theory.lbl.gov/http://ctp.berkeley.edu/
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Thank you, and...
Congr
atulati
ons! ! !